﻿#region Apache License
//
// Licensed to the Apache Software Foundation (ASF) under one or more 
// contributor license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright ownership. 
// The ASF licenses this file to you under the Apache License, Version 2.0
// (the "License"); you may not use this file except in compliance with 
// the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#endregion

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Javax.NServlet
{

    /// <summary>
    /// Ensures that servlets handle
    /// only one request at a time. This interface has no methods.
    /// 
    /// If a servlet implements this interface, you are <i>guaranteed</i>
    /// that no two threads will execute concurrently in the
    /// servlet's <code>service</code> method. The servlet container
    /// can make this guarantee by synchronizing access to a single
    /// instance of the servlet, or by maintaining a pool of servlet
    /// instances and dispatching each new request to a free servlet.
    /// 
    /// Note that SingleThreadModel does not solve all thread safety
    /// issues.  For example, session attributes and static variables can
    /// still be accessed by multiple requests on multiple threads
    /// at the same time, even when SingleThreadModel servlets are used.
    /// It is recommended that a developer take other means to resolve
    /// those issues instead of implementing this interface, such as
    /// avoiding the usage of an instance variable or synchronizing
    /// the block of the code accessing those resources.
    /// This interface is deprecated in Servlet API version 2.4.
    /// </summary>
    /// <author>  
    ///     <a href="mailto:leopoldo.agdeppa@gmail.com">Leopoldo Lee Agdeppa III</a>
    /// </author>
    /// <date>
    /// January 2009
    /// </date>
    [Obsolete("As of Java Servlet API 2.4, with no direct replacement.")]
    public interface ISingleThreadModel
    {
    }
}
